AT&T 75 Wiring Manual page 358
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- Wiring diagram (345 pages) ,
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- User manual (45 pages)
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110-TYPE HARDWARE
Trunk/Auxiliary Field Connections—Terminals Used for Emergency Failure Transfer and
as Normal Extensions
6 .
At Trunk/Auxiliary Field, run and connect pair of wires between PWR terminals
on the yellow emergency transfer row to EM TRANS RELAY PWR terminal (see
Figure 3-105).
7.
Run and connect CO trunk leads from the green field to TC terminals on the yellow
emergency transfer row for each trunk.
8 .
Run and connect CO trunk circuit leads from the green field to TK terminals on
the yellow emergency transfer row for each trunk.
9 .
Run and connect voice terminal leads from the purple analog line board row to LC
terminals on yellow emergency transfer row for each terminal.
10.
Run and connect the ST terminal leads on the yellow emergency transfer row for
each emergency transfer terminal to a separate row in the purple Trunk/Auxiliary
Field.
11.
Connect this purple field to the terminal appearance in the blue or white field
Station Distribution Field.
3-142
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